Changes in Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2018

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Components of comprehensive income (loss), net of tax

Changes in Foreign Currency Translation Adjustments for the three years ended December 31 were as follows:

		Foreign
		Currency
		Translation
		Adjustment
(Millions), net of tax		(losses) gains
Balances as of December 31, 2015	$	(1,156)
Net translation loss of investments in foreign operations		(187)
Net gains related to hedges of investments in foreign operations		80
Net change in accumulated other comprehensive loss		(107)
Balances as of December 31, 2016		(1,263)
Net translation gain of investments in foreign operations(a)		439
Net losses related to hedges of investments in foreign operations		(174)
Net change in accumulated other comprehensive loss		265
Balances as of December 31, 2017		(998)
Net translation loss of investments in foreign operations		(189)
Net gains related to hedges of investments in foreign operations		127
Net change in accumulated other comprehensive loss		(62)
Balances as of December 31, 2018	$	(1,060)

Includes $289 million of tax benefit recognized in the year ended December 31, 2017 (refer to Note 11).

Accumulated Other Comprehensive Loss Income - Tax Effect

The following table shows the tax impact for the three years ended December 31 for the changes in Foreign Currency Translation Adjustments presented above:

	Tax expense (benefit)
(Millions)		2018		2017		2016
Net translation on investments in foreign operations(a)	$	(23)	$	(209)	$	49
Net hedges of investments in foreign operations		40		(103)		48
Total tax impact	$	17	$	(312)	$	97

Includes $289 million of tax benefit recognized in the year ended December 31, 2017 (refer to Note 11).